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Class 585/322 - Including an aromatization step


Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter wherein a step converts a nonaromatic moiety
No. of patents: 155
Last issue date: 12/27/2011


1        
NumberTitleIssue Date
8084658Integrated process for preparing benzene and ammonia from aliphatic hydrocarbons and nitrogen
Process for the integrated preparation of aromatics and ammonia by reaction of a gas stream A comprising at least one C1-C6-aliphatic and nitrogen in the presence of at least one catalyst, wherein the C1-C6-aliphatics are ...
12/27/2011
8034987Process for producing propylene and aromatic hydrocarbons, and producing apparatus therefor
It is an object of the present invention to provide an improved process whereby the yield structure of the components can be varied by a simple method, and the products can be produced stably and efficiently in a process for producing propylene and aromatic hydrocar...
10/11/2011
7772447Production of liquid hydrocarbons from methane
In a process for converting methane to liquid hydrocarbons, a feed containing methane is contacted with 0 dehydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons, including benzene and/or naphthalene, and produce a fir...
08/10/2010
7439409Process for para-xylene production from light aliphatics
Low-value mixed butanes are processed to obtain a high yield of high-purity para-xylene. Processing steps may comprise fractionation to recover isobutane, dehydrogenation of the isobutane to isobutene, dimerization of the isobutene to obtain C8 iso-olefin...
10/21/2008
7411101Production of alkylaromatic compounds
A process for producing a monoalkylation aromatic product, such as ethylbenzene and cumene, utilizing an alkylation reactor zone and a transalkylation zone in series or a combined alkylation and transkylation reactor zone. ...
08/12/2008
7396967Manufacture of xylenes using reformate
A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product havi...
07/08/2008
7371916Conversion of an alcoholic oxygenate to propylene using moving bed technology and an etherification step
The average propylene selectivity per on-stream cycle of an alcoholic oxygenate to propylene (OTP) process using one or more fixed beds of a dual-function oxygenate conversion catalyst is substantially enhanced by the use of a feed pretreatment step involving a cata...
05/13/2008
7265075Hydro-refining catalyst, carrier for use therein and method for production thereof
A method for producing a hydrorefining catalyst of the present invention has a step of preparing an aluminum solution containing phosphorus in a molar ratio of 0.001 to 0.05 with respect to aluminum; a step of neutralizing the prepared aluminum solution to produce a...
09/04/2007
7262147Method for preparing dehydrocyclodimerization catalyst
This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The instant pr...
08/28/2007
7193121Method for producing 4-vinylcyclohexene, ethyl benzole and styrene
The invention relates to a process for preparing 4-vinylcyclohexene, which comprises the steps (A) providing an n-butane-containing feed gas stream, (B) feeding the n-butane-containing feed gas stream into at least...
03/20/2007
7176339Manufacture of xylenes using reformate
A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product havi...
02/13/2007
7176342Method for the preparation of hydrogenated hydrocarbons
A method for the preparation of hydrogenated hydrocarbons comprising a preliminary treatment of natural gas with a catalyst at a high temperature and the subsequent hydrogenation of the mixture of cyclic and/or aromatic hydrocarbons formed. ...
02/13/2007
7128827Integrated catalytic cracking and steam pyrolysis process for olefins
Integration of gas oil and light olefin catalytic cracking zones with a pyrolytic cracking zone to maximize efficient production of petrochemicals is disclosed. Integration of the units in parallel allows production of an overall product stream with maximum ethylene...
10/31/2006
7119240Method for converting natural gas to olefins
A process for converting natural gas to an olefin includes heating the gas to a selected range of temperature to convert a fraction of the gas stream to reactive hydrocarbons, primarily ethylene or acetylene, and reacting with hydrogen in the presence of a catalyst ...
10/10/2006
7119239Manufacture of xylenes using reformate
A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product havi...
10/10/2006
7071371Gel catalysts and methods for their use in catalytic dehydrogenation processes
A gel composition substantially contained within the pores of a solid material is disclosed for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes. ...
07/04/2006
7067708Process for the preparation of p-xylene
The present invention relates to a process for the preparation of para-xylene from trimethylpentane. ...
06/27/2006
7011809Attrition resistant gamma-alumina catalyst support
A γ-alumina catalyst support having improved attrition resistance produced by a method comprising the steps of treating a particulate γ-alumina material with an acidic aqueous solution comprising water and nitric acid and then, prior to adding any catalytic materi...
03/14/2006
6703429Process for converting synthesis gas into hydrocarbonaceous products
The present invention discloses a process for converting synthesis gas into hydrocarbonaceous products including the steps of: (a) subjecting a first portion of synthesis gas to a dual functional syngas conversion process to form a first effluent comprisi...
03/09/2004
6600081Process for the preparation of p-xylene
The present invention relates to a process for the preparation of para-xylene from trimethylpentane....
07/29/2003
6323381Manufacture of high purity benzene and para-rich xylenes by combining aromatization and selective disproportionation of impure toluene
A process is set forth for reacting impure toluene to obtain benzene, toluene and a para-rich xylene stream, which are substantially free of close-boiling non-aromatics. The impure toluene comprises at least 70 wt % toluene and between about 0.2 wt % and ...
11/27/2001
6281398Process for the production of high octane number gasolines
A process is disclosed for improving the yield in the production of high octane gasoline after naphtha reforming by utilizing a transalkylation step to upgrade the heavy and light fractions coming from the reforming step....
08/28/2001
6248929Rubber process oil and production process thereof
Disclosed is a rubber process oil in which the content of polycyclic aromatics (PCAs) as determined by the IP 346 method is less than 3% by mass and which is rich In aromatic hydrocarbons, and a method for producing the same. The aniline point of the rubb...
06/19/2001
6162350Hydroprocessing using bulk Group VIII/Group VIB catalysts (HEN-9901)
Hydroprocessing of petroleum and chemical feedstocks using bulk Group VIII/Group VIB catalysts. Preferred catalysts include those comprised of Ni--Mo--W....
12/19/2000
6143166Process for production of aromatics in parallel reformers with an improved catalyst life and reduced complexity
This process relates to reforming a full-boiling range hydrocarbon feed in two parallel stages while maximizing the catalyst life of the heavy cut reformer and/or reducing the complexity of the plant by preferentially sending the higher purity Aromax.RTM....
11/07/2000
6057487Method for producing 2,6-DMN from mixed dimethylnaphthalenes by crystallization, adsorption and isomerization
A method is disclosed to produce 2,6-dimethylnaphthalene (2,6-DMN), used for the production of polyethylene naphthalate, at high purity and high yield from a mixture of dimethylnaphthalene isomers without limitation to the specific isomers present in the ...
05/02/2000
6001241BTX from naphtha without extraction
A hydrocarbon feedstock is catalytically reformed in a sequence comprising a zeolitic-reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic L-zeolite and an aromatics-isomerization zone containing a catalyst comprising a ...
12/14/1999
5958217Two-stage reforming process that enhances para-xylene yield and minimizes ethylbenzene production
A hydrocarbon feed is reformed to enhance para-xylene yield and to minimize ethylbenzene production. The hydrocarbon feed is subjected to catalytic aromatization at elevated temperatures in the presence of hydrogen, using a non-acidic catalyst having at l...
09/28/1999
5932777Hydrocarbon conversion
A hydrocarbon conversion process comprises: (1) contacting a hydrocarbon feed such as, for example, gasoline, with a catalyst under a sufficient condition to effect the conversion of the hydrocarbon to a product stream comprising aromatic hydrocarbons and...
08/03/1999
5865986Hydrocarbon conversion
This is a process for upgrading a petroleum naphtha fraction. The naphtha is subjected to reforming and the reformate is cascaded to a benzene and toluene synthesis zone over a benzene and toluene synthesis catalyst comprising a molecular sieve of low aci...
02/02/1999
5792338BTX from naphtha without extraction
A hydrocarbon feedstock is catalytically reformed in a sequence comprising a continuous-reforming zone associated with continuous catalyst regeneration, a zeolitic-reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic L-ze...
08/11/1998
5773676Process for producing olefins and aromatics from non-aromatics
A multi-step process for converting non-aromatic hydrocarbons (preferably a gasoline-type hydrocarbon mixture) to lower olefins (preferably, ethylene and propylene) and aromatic hydrocarbons (preferably benzene, toluene and xylene) comprises, in sequence,...
06/30/1998
5658453Integrated aromatization/trace-olefin-reduction scheme
A process combination is disclosed to selectively upgrade naphtha in a manner to obtain an aromatics-rich, low-olefin product from the combination. Preferably the naphtha is subjected to aromatization to obtain an aromatics concentrate which is upgraded b...
08/19/1997
5600046Combination dehydrocyclodimerization and dehydrogenation process for producing aromatic and olefin products
This invention deals with a process for converting aliphatic C2 -C6 hydrocarbons into C6+ aromatics and C3= /C4= olefins. The process involves combining dehydrocyclodi...
02/04/1997
5489724High pressure drop endothermic process
Aliphatic feeds are converted to olefins and/or aromatics in a multi pressure reactor system. A high pressure first stage reactor generates much or all of the hydrogen needed to reduce catalyst coking in lower pressure downstream reactors. High pressure o...
02/06/1996
5472593BTX from naphtha without extraction
A hydrocarbon feedstock is catalytically reformed in a sequence comprising a reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic L-zeolite and an aromatics-isomerization zone containing a catalyst comprising a platinum-g...
12/05/1995
5436402Method for preparing p-isobutylstyrene
A method for preparing a high-purity p-isobutylstyrene is here disclosed which comprises the first step of reacting o- and/or m-isobutylethylbenzene, if necessary, together with isobutylbenzene, in the presence of an acid catalyst in a liquid phase at a r...
07/25/1995
5414172Naphtha upgrading
A process for upgrading low octane naphthas to produce gasoline products with low levels of benzene and aromatics while retaining a high pool octane uses a paraffinic naphtha reformer feed which is dehexanized to provide a C7 + fraction which i...
05/09/1995
5409595Heavy naphtha conversion
Catalytically cracked naphthas containing C9 + hydrocarbons are hydrocracked over a crystalline zeolite, typically, mildly steamed zeolite beta then subjected to reforming to achieve a gasoline product of reduced end boiling range and higher oc...
04/25/1995
5407558Method for controlling multistage aromatization process to give high aromatic barrel per calendar day throughput
A method is provided of selecting operating parameters for an aromatization process having at least penultimate and final stages, each containing a respective catalyst, for optimum aromatic barrel per calendar day (AB/CD) production of product having a se...
04/18/1995
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